Pole power tracking circuit

Abstract

The utility model discloses a pole power tracking circuit, belongs to the technical field of switching power supplies, and particularly relates to a pole power tracking circuit. Comprising a PWM module and a reference power supply module, the PWM module is connected with the reference power supply module, and the PWM module and the reference power supply module set the maximum platform to be larger than the maximum power point capable of being output by a pole and set the minimum platform to be smaller than the minimum power of the pole. Therefore, the switching power supply dynamically jumps on the maximum platform and the minimum platform to tend to be balanced, the balance point is the maximum power point of the pole, and at the moment, no matter how the input voltage changes or how the maximum power of the pole changes, the circuit can finally accurately obtain the maximum power of the pole. Therefore, the problem that the pole is not matched with the power of the power supply is solved.

Description

Technical Field

[0001] The utility model discloses a pole power tracking circuit, belongs to the technical field of switching power supplies, and particularly relates to a pole power tracking circuit. Background Art

[0002] Distribution network power poles, particularly in 10kV distribution lines, often utilize drop-out fuses as short-circuit breakers. These fuses are specifically designed to interrupt short-circuit currents to protect lines from damage. They are primarily used to protect branch lines and distribution transformers. By acting as short-circuit breakers, they ensure that in the event of a short circuit, the current is quickly cut off, preventing equipment damage, fire, and other safety incidents. Furthermore, distribution network power poles are designed to facilitate the use of wires. They are typically a metal sheet enclosed in insulating plastic, with holes at each end for inserting wires and tightening and loosening with screws, making them suitable for interconnecting large numbers of wires. This design not only ensures reliable contact but also ensures sufficient current flow, making them widely used in electrical connections for various industrial control cabinets and electrical cabinets.

[0003] As we all know, the power curve of the pole is roughly a parabola. For poles from different manufacturers, we can test them in advance or check the maximum power point in the specification. Under normal operating voltage conditions, the maximum power of the power supply can be edited. However, for the 20% voltage fluctuation in the power grid, conventional power supplies cannot adapt well. When traditional distribution power supplies are used with poles, the pole power is often not fully utilized, resulting in low pole utilization, or the power of the power supply is too high, causing the pole to collapse. Utility Model Content

[0004] Purpose of the utility model: to provide a pole power tracking circuit to solve the above-mentioned problems.

[0005] Technical solution: A pole power tracking circuit includes: a PWM module and a reference power supply module. The PWM module and the reference power supply module are connected. The PWM module and the reference power supply module set the maximum platform to be greater than the maximum power point that the pole can output, and the minimum platform to be less than the minimum power of the pole, so that the switching power supply dynamically jumps between the maximum platform and the minimum platform to approach balance, and the balance point is the maximum power point of the pole.

[0006] In a further embodiment, the PWM module includes: a PWM chip A19, a resistor R15, a resistor R20, a capacitor C5, a capacitor C7, a capacitor C8, a capacitor C27, a diode D8, a diode D10, a transformer T1C, a resistor R5, and a resistor R10;

[0007] Pin 1 of the PWM chip A19 inputs voltage G1, pin 2 of the PWM chip A19 is connected to the resistor R15, pin 3 of the PWM chip A19 is connected to the resistor R20 and one end of the resistor R20 inputs a compensation voltage, one end of the resistor R5 inputs voltage VINDC-1, and the other end is connected to one end of the resistor R10, pin 6 of the PWM chip A19 is simultaneously connected to one end of the capacitor C27, one end of the capacitor C7, one end of the capacitor C8 and the negative electrode of the diode D10, the negative electrode of the diode D8 is simultaneously connected to the positive electrode of the diode D10 and one end of the capacitor C5 and connected to the chip power supply voltage VP, the positive electrode of the diode D8 is connected to pin 2 of the transformer T1C, and pin 5 of the PWM chip A19 is simultaneously connected to the other end of the capacitor C27, the other end of the capacitor C8, the other end of the capacitor C7, the other end of the capacitor C5 and pin 1 of the transformer T1C.

[0008] In a further embodiment, the reference power supply module includes: a resistor R6, a resistor R38, a resistor R9, a resistor R36, a reference chip A3, an anti-tamper voltage regulator DZ1, an optoelectronic isolator PC35, a resistor R27, and a resistor R37;

[0009] The photoelectric isolator PC35 includes a photoelectric isolation diode PC35A and a photoelectric isolation transistor PC35B;

[0010] One end of the resistor R6 inputs the voltage VINDC-1, and the other end is simultaneously connected to one end of the resistor R38, one end of the resistor R9 and the R end of the reference chip A3. One end of the resistor R36 inputs the chip power supply voltage VP, and the other end is simultaneously connected to the C end of the reference chip A3 and the negative electrode of the anti-do not move voltage regulator DZ1. The positive electrode of the anti-do not move voltage regulator DZ1 is connected to one end of the photoelectric isolation diode PC35A of the photoelectric isolator PC35. The other end of the resistor R9 is simultaneously connected to the other end of the resistor R38, the reference chip A3 The A end of the resistor R27 is connected to the other end of the photoelectric isolation diode PC35A and the output voltage G1 is connected to pin 1 of the PWM chip A19. One end of the resistor R27 is connected to the chip power supply voltage VP, and the other end is connected to one end of the photoelectric isolation transistor PC35B of the photoelectric isolator PC35. The other end of the photoelectric isolation transistor PC35B is connected to one end of the resistor R20 to input the compensation voltage CSP-2. One end of the resistor R37 is connected to the input voltage VINDC-1, and the other end is connected to one end of the resistor R20 to input the compensation voltage CSP-2.

[0011] In a further embodiment, the voltage VINDC-1+ and the voltage G1 are voltages obtained from the poles and can be rectified and filtered, and the resistor R6, the resistor R38, and the resistor R9 form a voltage sampling circuit.

[0012] Beneficial effect: The utility model solves the problem of mismatch between the pole and the power supply power. The maximum platform is set to be greater than the maximum power point that the pole can output, and the minimum platform is set to be less than the minimum power of the pole. In this way, the switching power supply will dynamically jump between the maximum and minimum platforms and eventually tend to balance. The balance point is the maximum power point of the pole. At this time, no matter how the input voltage changes or how the maximum power of the pole changes, this circuit can finally accurately obtain the maximum power of the pole. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a circuit diagram of a PWM module of the present utility model.

[0014] Figure 2 This is a circuit diagram of a reference power supply module of the present utility model. DETAILED DESCRIPTION

[0015] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0016] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0017] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0018] A pole power tracking circuit includes: a PWM module and a reference power supply module. The PWM module and the reference power supply module are connected to each other. The PWM module and the reference power supply module set a maximum platform greater than the maximum power point that the pole can output, and a minimum platform less than the minimum power of the pole, so that the switching power supply dynamically jumps between the maximum platform and the minimum platform to approach equilibrium. The equilibrium point is the maximum power point of the pole.

[0019] In one embodiment, Figure 1 As shown, the PWM module includes: PWM chip A19, resistor R15, resistor R20, capacitor C5, capacitor C7, capacitor C8, capacitor C27, diode D8, diode D10, transformer T1C, resistor R5, resistor R10;

[0020] Pin 1 of the PWM chip A19 inputs voltage G1, pin 2 of the PWM chip A19 is connected to the resistor R15, pin 3 of the PWM chip A19 is connected to the resistor R20 and one end of the resistor R20 inputs a compensation voltage, one end of the resistor R5 inputs voltage VINDC-1, and the other end is connected to one end of the resistor R10, pin 6 of the PWM chip A19 is simultaneously connected to one end of the capacitor C27, one end of the capacitor C7, one end of the capacitor C8 and the negative electrode of the diode D10, the negative electrode of the diode D8 is simultaneously connected to the positive electrode of the diode D10 and one end of the capacitor C5 and connected to the chip power supply voltage VP, the positive electrode of the diode D8 is connected to pin 2 of the transformer T1C, and pin 5 of the PWM chip A19 is simultaneously connected to the other end of the capacitor C27, the other end of the capacitor C8, the other end of the capacitor C7, the other end of the capacitor C5 and pin 1 of the transformer T1C.

[0021] In one embodiment, Figure 2As shown, the reference power supply module includes: resistor R6, resistor R38, resistor R9, resistor R36, reference chip A3, anti-tamper voltage regulator DZ1, optoelectronic isolator PC35, resistor R27, resistor R37;

[0022] The photoelectric isolator PC35 includes a photoelectric isolation diode PC35A and a photoelectric isolation transistor PC35B;

[0023] One end of the resistor R6 inputs the voltage VINDC-1, and the other end is simultaneously connected to one end of the resistor R38, one end of the resistor R9 and the R end of the reference chip A3. One end of the resistor R36 inputs the chip power supply voltage VP, and the other end is simultaneously connected to the C end of the reference chip A3 and the negative electrode of the anti-do not move voltage regulator DZ1. The positive electrode of the anti-do not move voltage regulator DZ1 is connected to one end of the photoelectric isolation diode PC35A of the photoelectric isolator PC35. The other end of the resistor R9 is simultaneously connected to the other end of the resistor R38, the reference chip A3 The A end of the resistor R27 is connected to the other end of the photoelectric isolation diode PC35A and the output voltage G1 is connected to pin 1 of the PWM chip A19. One end of the resistor R27 is connected to the chip power supply voltage VP, and the other end is connected to one end of the photoelectric isolation transistor PC35B of the photoelectric isolator PC35. The other end of the photoelectric isolation transistor PC35B is connected to one end of the resistor R20 to input the compensation voltage CSP-2. One end of the resistor R37 is connected to the input voltage VINDC-1, and the other end is connected to one end of the resistor R20 to input the compensation voltage CSP-2.

[0024] In one embodiment, Figure 2 As shown, the voltage VINDC-1+ and the voltage G1 are voltages obtained from the poles after rectification and filtering, and the resistor R6, the resistor R38, and the resistor R9 form a voltage sampling circuit.

[0025] Working Principle: This power supply PWM chip A19 takes the KP212LGA produced by Biyiwei as an example. The devices connected to pins 4, 5, and 6 of the PWM chip A19 are the parameters required for the chip to fix its working parameters. They are not explained in detail here. VINDC-1+ and G1 are the poles to obtain the voltage that can be rectified and filtered. Resistors R6, R38, and R9 perform voltage sampling. The reference chip A3 is model AZ431. VP is the chip supply voltage.

[0026] When the input voltage exceeds the maximum power point of the pole test, the voltage sampling can make the C terminal of the reference chip A3 generate a low level, thereby through the anti-movement voltage regulator DZ1, keeping the photoelectric isolation diode PC35A non-conducting, VP cannot be given to the CS pin of the PWM chip A19 through the photoelectric isolation transistor PC35B, that is, the No. 3 pin of the PWM chip A19. A fixed compensation, the output power of the switching power supply increases, so when the input terminal exceeds the maximum power point of the pole test, the power of the switching power supply increases, otherwise the power of the switching power supply decreases, making a A maximum power point platform and a minimum power point platform, wherein the resistor R37 provides a variable compensation for the PWM chip A19, which can change according to the input voltage, and can keep the maximum and minimum platforms stable. In the present invention, the maximum platform is set to be greater than the maximum power point that the pole can output, and the minimum platform is set to be less than the minimum power of the pole. In this way, the switching power supply will dynamically jump on the maximum and minimum platforms and eventually tend to balance. The balance point is the maximum power point of the pole. At this time, no matter how the input voltage changes or how the maximum power of the pole changes, this circuit can finally accurately obtain the maximum power of the pole.

[0027] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A pole power tracking circuit, characterized in that: include: A PWM module and a reference power supply module are connected to each other. The PWM module and the reference power supply module set the maximum platform to be greater than the maximum power point that the pole can output, and the minimum platform to be less than the minimum power of the pole, so that the switching power supply dynamically jumps between the maximum platform and the minimum platform to approach balance, and the balance point is the maximum power point of the pole.

2. The pole power tracking circuit according to claim 1, characterized in that: The PWM module includes: PWM chip A19, resistor R15, resistor R20, capacitor C5, capacitor C7, capacitor C8, capacitor C27, diode D8, diode D10, transformer T1C, resistor R5, resistor R10; Pin 1 of the PWM chip A19 inputs voltage G1, pin 2 of the PWM chip A19 is connected to the resistor R15, pin 3 of the PWM chip A19 is connected to the resistor R20 and one end of the resistor R20 inputs a compensation voltage, one end of the resistor R5 inputs voltage VINDC-1, and the other end is connected to one end of the resistor R10, pin 6 of the PWM chip A19 is simultaneously connected to one end of the capacitor C27, one end of the capacitor C7, one end of the capacitor C8 and the negative electrode of the diode D10, the negative electrode of the diode D8 is simultaneously connected to the positive electrode of the diode D10 and one end of the capacitor C5 and connected to the chip power supply voltage VP, the positive electrode of the diode D8 is connected to pin 2 of the transformer T1C, and pin 5 of the PWM chip A19 is simultaneously connected to the other end of the capacitor C27, the other end of the capacitor C8, the other end of the capacitor C7, the other end of the capacitor C5 and pin 1 of the transformer T1C.

3. The pole power tracking circuit according to claim 2, characterized in that: The reference power supply module includes: resistor R6, resistor R38, resistor R9, resistor R36, reference chip A3, anti-tamper voltage regulator DZ1, photoelectric isolator PC35, resistor R27, resistor R37; The photoelectric isolator PC35 includes a photoelectric isolation diode PC35A and a photoelectric isolation transistor PC35B; One end of the resistor R6 inputs the voltage VINDC-1, and the other end is simultaneously connected to one end of the resistor R38, one end of the resistor R9 and the R end of the reference chip A3. One end of the resistor R36 inputs the chip power supply voltage VP, and the other end is simultaneously connected to the C end of the reference chip A3 and the negative electrode of the anti-do not move voltage regulator DZ1. The positive electrode of the anti-do not move voltage regulator DZ1 is connected to one end of the photoelectric isolation diode PC35A of the photoelectric isolator PC35. The other end of the resistor R9 is simultaneously connected to the other end of the resistor R38, the reference chip A3 The A end of the resistor R27 is connected to the other end of the photoelectric isolation diode PC35A and the output voltage G1 is connected to pin 1 of the PWM chip A19. One end of the resistor R27 is connected to the chip power supply voltage VP, and the other end is connected to one end of the photoelectric isolation transistor PC35B of the photoelectric isolator PC35. The other end of the photoelectric isolation transistor PC35B is connected to one end of the resistor R20 to input the compensation voltage CSP-2. One end of the resistor R37 is connected to the input voltage VINDC-1, and the other end is connected to one end of the resistor R20 to input the compensation voltage CSP-2.

4. The pole power tracking circuit according to claim 3, characterized in that: The voltage VINDC-1+ and the voltage G1 are voltages obtained by the poles and can be rectified and filtered. The resistor R6, the resistor R38, and the resistor R9 form a voltage sampling circuit.

Images